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Finding the Fourth Proportional to 475,728.42, 712,192.93 and 317,564.58

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Solution

The fourth proportional to 475,728.42, 712,192.93 and 317,564.58 is: 475,412.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,728.42 : 712,192.93 = 317,564.58 : x
  2. Step 2: Convert to fraction form
    475,728.42/712,192.93 = 317,564.58/x
  3. Step 3: Cross multiply
    475,728.42x = 712,192.93 × 317,564.58
  4. Step 4: Simplify right side
    475,728.42x = 226,167,244,339.54
  5. Step 5: Solve for x
    x = 226,167,244,339.54/475,728.42
  6. Step 6: Final answer
    x = 475,412.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.